added Captcha reconstruction specification
added Captcha reconstruction specification

git-svn-id: 1e305be66d043bb50495ad67d7451794839df690@1179 b2c27d59-8999-dc11-853b-000bcdefe56b

beni55/old-openresty,agentzh/old-openresty,agentzh/old-openresty,beni55/old-openresty,beni55/old-openresty,agentzh/old-openresty,beni55/old-openresty,agentzh/old-openresty,beni55/old-openresty